arXiv:quant-ph/0208074 · Physical Review A

Two roles of relativistic spin operators

Daniel R. Terno

Published Jan 29, 2003• 65 citations

Abstract

Operators that are associated with several important quantities, such as angular momentum, play a double role: they are both generators of the symmetry group and ``observables.'' The analysis of different splittings of angular momentum into ``spin'' and ``orbital'' parts reveals the difference between these two roles. We also discuss a relation of different choices of spin observables to the violation of Bell inequalities.

DOI: 10.1103/physreva.67.014102

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